Telephone reminders are a cost effective way to improve responses in postal health surveys
MS Silva, WT Smith, G Bammer - Journal of Epidemiology & …, 2002 - jech.bmj.com
Study objective: To assess the effectiveness of a telephone reminder in increasing
responses to postal surveys and to calculate the differential costs per completed …
responses to postal surveys and to calculate the differential costs per completed …
The JECH gallery
E Pascual, GA Colditz, MJ Stampfer, WC Willett… - 2002 - ncbi.nlm.nih.gov